package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class SortInteger {
    public static void main(String[] args) {
        Random rand  =new Random();
        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < 10; i++){
            list.add(rand.nextInt(100));
        }

        System.out.println("list:"+list);

        Collections.sort(list);
        System.out.println("list:"+list);

        Collections.reverse(list);
        System.out.println("list:"+list);
        System.out.println("第一个元素为"+list.get(0));
    }
}
